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WSHP-SVX01AA-EN
Table 61. Troubleshooting table (continued)
Problem
Hea-
ting
Cool-
ing
Cause Correction
High head pressure
X
Trash in heat exchanger
Backflush
X Low water flow Increase GPM
X X
Overcharge of refrigerant Decrease charge
X X
Non-condensable in system Evacuate and recharge by weight
X X Water too hot
Decrease temperature
X
Dirty filter Clean / replace
X
Inadequate air flow Check, clean blower and coil
Low suction pressure
X X
Undercharged Locate leak, repair and recharge
X X
Restricted thermal expansion valve Repair / replace
X
Inadequate air flow Check, clean blower and coil
X
Dirty filter Clean/replace
X
Inadequate GPM
Increase GPM
Low pressure switch open
X
Inadequate GPM
Increase GPM
X Water too cold
Increase temperature
X
Inadequate air flow
Increase CFM
X
Dirty filter Clean/replace
X X
Undercharged with refrigerant Increase charge
X X
Defective pressure switch Replace
X X Heat transfer fluid too cold
Raise water temperature
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